Question

John bought 10 notebooks for rs.124. How much would he have to pay for 7 notebooks?

Answer 1

clearly
10 note-----rs 124
7 note----- rs x
by cross multiplication,,

10x=124*7
x=124*7 / 10
x= 86.8

your answer is Rs 86.8

Answer 2

$\color{blue}{ \boxed{ \ \huge{ \underline{thanks \: for \: asking \: this \: question}}}}$


$\color{red}{ \boxed{ \ \huge{ \underline{bonjour}}}}$



$\color{grey}{ \boxed{ \ \huge{ \bold{ \underline{solution}}}}}$



$\color{blue}{ \boxed{ \bold{ \underline{1 \: \: notebook \: cost}}}} =) \frac{124}{10} \\ = 12.4$


$\color{blue}{ \boxed{ \ \huge{ \bold{ \underline{now}}}}}$


$\color{violet}{ \boxed{ \ \huge{ \bold{ \underline{cost \: of \: 7 \: notebook}}}}}$


$\color{indigo}{ \boxed{ \ \huge{ \bold{ \underline{12.4 \times 7 = 86.8}}}}}$


$\color{yellow}{ \boxed{ \ \huge{ \bold{ \underline{answer \: = )86.8}}}}}$


$\color{blue}{ \boxed{ \ \huge{ \bold{ \underline{thanks}}}}}$